Most Porsche dealers and indepenant shops will do a prebuy check for you. Were are you ?

If you are having a prebuy check done ask the mechanic to hook up the Porsche computer to the car. He will be able to tell you how many times the rev limiter as been hit. This will give you an idea of how hard the car has been driven.

only dealer mechanics have the computer for the porsche right? or do other private german car shops also have it?
im in dublin/pleasanton area.
there are two cars im interested in. one is in here in dublin and another is in sf. not sure what i will get.

Kahlers in Dublin is a good shop ( my in laws have used them for various Porsches they have owned over the past 20 years ). I have used them for an annual service too ( now I do the annual service myself ).